Model Number

Input MBHThermal

%

Gross Output MBH

Net Rating MBH

Turn-down A B C D E F G H J K L M N O P Q R Gas

Conn.

WaterAir

IntakeVent Size

Oper. Weight(with

water)

Ship. Weight(lbs.)Min Max Inlet/

Outlet

FB*0751 50 750 96.2% 722 627 15:1 78” 30” 55-1/2” 57-5/8” 66-1/8” 11-7/8” 11-3/8” 11-1/4” 12-1/2” 55” 51” 13” 8-3/4” 26-3/4” 23-3/4” 49-1/2” 7-3/8” 1-1/4” 3” 6” 6” 1,768 1,560FB*1001 50 1,000 96.2% 962 837 20:1 78” 30” 56-1/2” 57-5/8” 66-1/8” 11-7/8” 11-3/8” 11-1/4” 12-1/2” 56” 51” 13” 8-3/4” 26-3/4” 23-1/8” 49-1/2” 6-1/2” 1-1/4” 3” 6” 6” 1,838 1,596FB*1251 63 1,250 96.2% 1,203 1,046 20:1 78” 30” 56-1/2” 57-3/4” 66-1/8” 11-7/8” 11-3/8” 11-1/4” 12-1/2” 56” 51-3/8” 13” 8-3/4” 26-3/4” 21-5/8” 49-1/2” 6-1/2” 1-1/4” 3” 6” 8” 1,975 1,648FB*1501 60 1,500 96.2% 1,443 1,255 25:1 78” 30” 67-3/4” 68” 65-3/8” 12-3/8” 11-3/8” 11-1/4” 12-1/2” 67-1/4” 62-3/8” 15-7/8” 9” 26-7/8” 27-7/8” 59-1/4” 5-1/8” 1-1/2” 4” 8” 8” 2,307 1,961FB*1751 70 1,750 96.2% 1,684 1,464 25:1 78” 30” 66-1/4” 68” 65-3/8” 12-3/8” 11-3/8” 11-1/4” 12-1/2” 65-3/4” 61-1/2” 15-7/8” 9” 27” 27-1/8” 58-3/4” 5-1/8” 1-1/2” 4” 8” 8” 2,458 2,017FB*2001 80 1,999 96.2% 1,924 1,673 25:1 78” 30” 66-1/2” 68” 65-3/8” 12-3/8” 11-3/8” 11-1/4” 12-1/2” 66” 61-1/2” 15-7/8” 9” 27” 26-3/4” 58-3/4” 5-1/8” 1-1/2” 4” 8” 8” 2,570 2,087FB*2501 125 2,500 96% 2,400 2,087 20:1 77-3/4” 35” 83-3/4” 83-3/4” 63-3/4” 13-1/2” 11-1/4” 10-1/2” 12-1/4” 83-1/4” 76-1/4” 19-3/4” 9-1/4” 28-3/4” 32” 71” 7-1/4” 2” 4” 8” 9” 3,600 2,577FB*3001 150 3,000 96% 2,880 2,504 20:1 77-3/4” 35” 83-3/4” 83-3/4” 63-3/4” 13-1/2” 11-1/4” 10-1/2” 12-1/4” 83-1/4” 76-1/4” 19-3/4” 9-1/4” 28-3/4” 32” 71” 7-1/4” 2” 4” 10” 10” 3,900 2,881FB*3501 175 3,500 96% 3,360 2,921 20:1 77-3/4” 42” 91-1/2” 86-3/4” 63-1/2” 13-1/4” 11-1/2” 10-3/4” 12-1/2” 91” 82” 20-1/4” 12-3/4” 35-1/2” 31-3/4” 73-1/4” 8-3/4” 2” 4” 10” 10” 4,600 3,218FB*4001 333 3,999 96% 3,840 3,339 12:1 77-3/4” 45-1/2” 103-1/2” 99” 63-1/2” 13-3/4” 11-1/2” 10-3/4” 12-1/2” 103” 94” 24-3/4” 13-1/2” 39-1/2” 42-1/4” 85-1/4” 10-1/2” 2-1/2” 4” 12” 12” 5,200 3,805FB*5001 500 4,999 96% 4,800 4,173 10:1 77-3/4” 46-1/2” 102-1/4” 99-1/2” 63-1/2” 15” 11-1/2” 10-3/4” 12-1/2” 101-3/4” 92-1/2” 22” 14” 39-3/4” 39-1/2” 84” 9” 2-1/2” 6” 12” 14” 5,900 4,101FB*6001 600 6,000 96% 5,760 5,008 10:1 77-3/4” 50” 102-3/4” 99-3/4” 63-1/4” 14-3/4” 11-1/2” 10-3/4” 12-1/2” 102-1/2” 93-1/4” 20” 15-3/4” 43-1/2” 36-1/2” 83-3/4” 9-1/4” 2-1/2” 6” 14” 14” 6,900 4,711

MODELSFB 0751 - FB 6001

CRESTCOMMERCIAL

CONDENSING BOILERSubmittal Sheet FBN-Sub-09

JOB NOTES:

CD

H

J

A

G

F

E

B

KL

R

NO

PM

Q

Job Name: Location:

_______________________________________________ _______________________________________________

Engineer: Model #:

_______________________________________________ _______________________________________________

Contractor: Type Gas:

_______________________________________________ _______________________________________________

Agent/Wholesaler: Equipment Tag(s):

_______________________________________________ _______________________________________________

SIDE BACK TOP

Notes:* Insert “N” for natural gas, “L” for LP gas models and

“D” for dual fuel.• Indoor installation only. Information subject to

change without notice. • Low NOx Operation.• Lochinvar should be consulted before selecting a boiler

for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.

• The ratings have been determined under the provisions governing forced draft burners.

• The Net AHRI water ratings shown are based on a piping and pickup allowance of 1.15.

Smart Touch™ FeaturesCON·X·US Remote Connect

SMART TOUCH Touchscreen Operating Control

Full-Color 8” Touchscreen LCD Display

Built-in Cascading Sequencer for up to 8 Boilers> Built-in Redundancy> Cascade Multiple Sized Boilers> Lead/Lag Cascade> Efficiency Optimized Cascade

Front-End Loading Capability with Copper-Fin II® and Power-Fin® Boilers

Building Management System Integration with 0-10 VDC Input

BACnet MSTP Communications

Modbus Communication

Outdoor Reset Control with Outdoor Air Sensor

Password Security

Domestic Hot Water Prioritization> DHW tank piped with priority in the boiler loop> DHW tank piped as a zone in the system with the

pumps controlled by the Smart System> DHW Modulation Limiting> Separately Adjustable SH/DHW Switching Times

Low Water Flow Safety Control & Indication

Inlet & Outlet Temperature Readout

Freeze Protection

Service Reminder

Time Clock

Data Logging> Hours Running, Space Heating> Hours Running, Domestic Hot Water> Hours Running, Modulation Rate> Ignition Attempts> Last 10 Lockouts

Programmable System Efficiency Optimizers> Night Setback> Anti-Cycling> Outdoor Air Reset Curve> Ramp Delay> Boost Temperature & Time> Modulation Factor Control

Three Pump Control> System Pump> Boiler Pump> Domestic Hot Water Pump

6/18—Printed in U.S.A.

Lochinvar, LLC 300 Maddox Simpson ParkwayLebanon, Tennessee 37090P: 615.889.8900 / F: 615.547.1000

Lochinvar.com

Codes & RegistrationsASME certified, “H” Stamp / National Board

California Code Compliant

Canadian Registration Number (CRN)

CSD1 / Factory Mutual / GE Gap Compliant

South Coast Air Quality Management District Qualified (FB 0751-2001)

High-Voltage Terminal Strip> 120 VAC / 60 Hertz / 1 Phase Power Supply(FB 0751-2001)

> 208 VAC/ 60 Hertz/ 3 Phase Power Supply(FB 2501-3501)

> 480 VAC/60 Hertz/3 Phase Power Supply(FB 4001-6001)

> System Pump, Boiler Pump and DHW Pump Power

Low-Voltage Terminal Strip> 24 VAC Auxiliary Device Relay> Auxiliary Proving Switch Contacts> Alarm on Any Failure Contacts> Runtime Contacts> DHW Thermostat Contacts> Unit Enable/Disable Contacts> System Sensor Contacts> DHW Tank Sensor Contacts> Outdoor Air Sensor Contacts> Cascade Contacts> 0-10 VDC BMS External Control Contact> 0-10 VDC Variable Speed Boiler Pump Control Contact

Standard FeaturesUp to 96.2% Thermal Efficiency

Proof of Closure Valve (FB 6001)

Modulating Burner with up to 25:1 Turndown

Direct-Spark Ignition

Low NOx Operation

Sealed Combustion

Air Inlet Filter

Low Gas Pressure Operation

Vertical and Horizontal Direct Venting > Direct Vent up to 100 Feet> PVC, CPVC, Polypropylene or AL29-4C

(FB 0751-3501)> AL29-4C (FB 0751-6001)

ASME “H” Stamped Heat Exchanger

316L Stainless Steel Fire Tubes

160 psi Working Pressure

On/Off Switch

Adjustable High Limit with Manual Reset

Low Water Cutoff with Manual Reset & Test

High & Low Gas Pressure Switches w/Manual Reset

Low Air Pressure Switches

Condensate Trap w/Blocked Drain Switch

Drain Valve

System Sensor

Outdoor Air Sensor

Inlet & Outlet Temperature Sensors

High-Voltage Terminal Strip

Low-Voltage Terminal Strip

Downstream Gas Test Cocks

50 psi ASME Relief Valve

Temperature & Pressure Gauge

Zero Clearances to Combustible Materials

High Altitude Models Available

10-Year Limited Warranty (See Warranty for Details)

1-Year Warranty on Parts (See Warranty for Details)

Optional EquipmentAlarm Bell

BMS Gateway - BACnet IP or LonWorks

Condensate Neutralization Kit

Common Vent Kits Damper

Motorized Isolation Valve

Variable Speed Boiler Pump

Wireless Outdoor Temperature Sensor

75 psi ASME Relief Valve

100 psi ASME Relief Valve

125 psi ASME Relief Valve

150 psi ASME Relief Valve

Electrical Options (Shipped Loose):> FB 0751-2001

208V/ 1Ø/60 Hz g 120V/ 1Ø/60Hz

480V/ 1Ø/60 Hz g 120V/ 1Ø/60Hz

600V/ 1Ø/60 Hz g 120V/ 1Ø/60Hz

> FB 2501-3501

480V/ 3Ø/60 Hz g 208V/ 3Ø/60Hz

600V/ 3Ø/60 Hz g 208V/ 3Ø/60Hz

> FB 4001-6001

600V/ 3Ø/60 Hz g 480V/ 3Ø/60Hz